CN204003723U - A kind of reduction valve - Google Patents
A kind of reduction valve Download PDFInfo
- Publication number
- CN204003723U CN204003723U CN201420428359.4U CN201420428359U CN204003723U CN 204003723 U CN204003723 U CN 204003723U CN 201420428359 U CN201420428359 U CN 201420428359U CN 204003723 U CN204003723 U CN 204003723U
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- China
- Prior art keywords
- piston
- damping cavity
- pressure
- inner chamber
- damping
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- Expired - Fee Related
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- Fluid-Damping Devices (AREA)
Abstract
The utility model belongs to hydraulic equipment field, be specially a kind of reduction valve, comprise the valve body with inner chamber, this inner chamber is communicated with high pressure entry and low tension outlet, the piston assembly that in described inner chamber, setting adapts with it, this piston assembly comprises first piston and the second piston being connected by piston rod, first piston is positioned near high pressure entry, the second piston is positioned near low tension outlet, piston assembly is separated into the first damping cavity by inner chamber, diversion cavity and the second damping cavity, in the first damping cavity, arrange and be connected with first piston and the spring coaxial with piston rod, the second damping cavity is communicated with low tension outlet by damping road.The utility model is simple in structure, and delivery pressure is stable, oil-break not, and reliability is high.
Description
Technical field
The utility model belongs to hydraulic equipment field, is specially a kind of reduction valve.
Background technique
Reduction valve is by regulating, inlet pressure being reduced to the outlet pressure of a certain needs, and rely on the energy of medium itself, makes outlet pressure automatically keep stable valve.From hydromechanical viewpoint, reduction valve is a throttle element that local resistance can change, and by changing orifice size, the kinetic energy of flow velocity and fluid is changed, and causes the different pressure losses, thereby reaches the object of decompression.Current reduction valve is on the market various.
Summary of the invention
The purpose of this utility model is, a kind of reduction valve is provided, and realizes the technique effect of voltage stabilizing in the time of decompression.
For realizing above-mentioned technical purpose, the scheme that the utility model provides is: a kind of reduction valve, comprise the valve body with inner chamber, this inner chamber is communicated with high pressure entry and low tension outlet, the piston assembly that in described inner chamber, setting adapts with it, this piston assembly comprises first piston and the second piston being connected by piston rod, first piston is positioned near high pressure entry, the second piston is positioned near low tension outlet, piston assembly is separated into the first damping cavity by inner chamber, diversion cavity and the second damping cavity, in the first damping cavity, arrange and be connected with first piston and the spring coaxial with piston rod, the second damping cavity is communicated with low tension outlet by damping road.
And, the duct axially with connection the first damping cavity and the second damping cavity of described piston assembly, described the first damping cavity is communicated with the pressure-releasing chamber in valve body with drain tap, and limiting mechanism of pressure is set in pressure-releasing chamber.
And described limiting mechanism of pressure comprises valve and the limit plunger being connected by spring, valve is placed in the connecting port place of pressure-releasing chamber and the first damping cavity, and limit plunger adapts with pressure-releasing chamber and contacts with the voltage regulation screw that stretches into pressure-releasing chamber, and voltage regulation screw is connected with valve body screw thread.
The utility model is simple in structure, and delivery pressure is stable, oil-break not, and reliability is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Wherein, 1, valve body, 2, high pressure entry, 3, low tension outlet, 4, the first damping cavity, 5, diversion cavity, the 6, second damping cavity, 7, pressure-releasing chamber, 8, damping road, 9, first piston, 10, the second piston, 11, piston rod, 12, spring, 13, valve, 14, limit plunger, 15, spring, 16, voltage regulation screw, 17, drain tap, 18, duct.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
The present embodiment provides a kind of reduction valve, comprise the valve body 1 with inner chamber, this inner chamber is communicated with high pressure entry 2 and low tension outlet 3, the piston assembly that in described inner chamber, setting adapts with it, this piston assembly comprises first piston 9 and the second piston 10 being connected by piston rod 11, first piston 9 is positioned near high pressure entry 2, the second piston 10 is positioned near low tension outlet 3, piston assembly is separated into the first damping cavity 4 by inner chamber, diversion cavity 5 and the second damping cavity 6, the interior setting of the first damping cavity 4 is connected with first piston 9 and the spring 12 coaxial with piston rod 11, the second damping cavity 6 is communicated with low tension outlet 3 by damping road 8.
Further, the duct 18 axially with connection the first damping cavity 4 and the second damping cavity 6 of above-mentioned piston assembly, described the first damping cavity 4 is communicated with the pressure-releasing chamber 7 in valve bodies 1 with drain tap 17, the interior limiting mechanism of pressure that arranges of pressure-releasing chamber 7.
Further, above-mentioned limiting mechanism of pressure comprises valve 13 and the limit plunger 14 being connected by spring 15, valve 13 is placed in the connecting port place of pressure-releasing chamber 7 and the first damping cavity 4, and limit plunger 14 adapts with pressure-releasing chamber 7 and contacts with the voltage regulation screw 16 that stretches into pressure-releasing chamber 7, and voltage regulation screw 16 is threaded with valve body 1.
During the present embodiment work, high pressure oil enters inner chamber by high pressure entry 2, and under the guiding of diversion cavity 5, high pressure oil pushing tow the second piston 10 moves to the direction of extruding the second damping cavity 6, to expand the relief space between diversion cavity 5 and low tension outlet 3.Now, along with the movement of piston assembly, there are elastic strains and produce the pulling force that overcomes piston assembly continuation movement in the spring 12 in the first damping cavity 4, thereby realizes first step voltage stabilizing.A part enters the second damping cavity 6 to the mobile hydraulic oil of relief outlet 3 under the guiding in damping road 8, the second piston 10 is applied to certain making every effort to overcome and take the movement that the second piston 10 continues extruding the second damping cavity 6, realizes second step voltage stabilizing.Release that superfluous pressure oil is directed to the first damping cavity 4 in the axial duct 18 of piston assembly, to reduce the resistance in the second damping cavity 6, guarantees the relief space between diversion cavity 5 and low tension outlet 3.Pressure in the first damping cavity 4 arrives to a certain degree, hydraulic oil will promote valve 13 and enter into pressure-releasing chamber 7, and then discharges valve body 1 from drain tap 17, and 15, spring is to provide jacking force for valve 13, with the unlatching size of control valve, thus control valve body internal pressure.And the initial deformation that the application of force size of spring 15 promotes limit plunger 14 restraining springs 15 self by voltage regulation screw 16 determines.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvement or distortion, these improvement or distortion also should be considered as protection domain of the present utility model.
Claims (3)
1. a reduction valve, comprise the valve body with inner chamber, this inner chamber is communicated with high pressure entry and low tension outlet, it is characterized in that: the piston assembly that in described inner chamber, setting adapts with it, this piston assembly comprises first piston and the second piston being connected by piston rod, first piston is positioned near high pressure entry, the second piston is positioned near low tension outlet, piston assembly is separated into the first damping cavity by inner chamber, diversion cavity and the second damping cavity, in the first damping cavity, arrange and be connected with first piston and the spring coaxial with piston rod, the second damping cavity is communicated with low tension outlet by damping road.
2. a kind of reduction valve according to claim 1, it is characterized in that: the duct axially with connection the first damping cavity and the second damping cavity of described piston assembly, described the first damping cavity is communicated with the pressure-releasing chamber in valve body with drain tap, and limiting mechanism of pressure is set in pressure-releasing chamber.
3. a kind of reduction valve according to claim 2, it is characterized in that: described limiting mechanism of pressure comprises valve and the limit plunger being connected by spring, valve is placed in the connecting port place of pressure-releasing chamber and the first damping cavity, limit plunger adapts with pressure-releasing chamber and contacts with the voltage regulation screw that stretches into pressure-releasing chamber, and voltage regulation screw is connected with valve body screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420428359.4U CN204003723U (en) | 2014-07-31 | 2014-07-31 | A kind of reduction valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420428359.4U CN204003723U (en) | 2014-07-31 | 2014-07-31 | A kind of reduction valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204003723U true CN204003723U (en) | 2014-12-10 |
Family
ID=52043730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420428359.4U Expired - Fee Related CN204003723U (en) | 2014-07-31 | 2014-07-31 | A kind of reduction valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204003723U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196794A (en) * | 2014-07-31 | 2014-12-10 | 红安安达新材料有限责任公司 | Pressure reducing valve |
-
2014
- 2014-07-31 CN CN201420428359.4U patent/CN204003723U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196794A (en) * | 2014-07-31 | 2014-12-10 | 红安安达新材料有限责任公司 | Pressure reducing valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20150731 |
|
| EXPY | Termination of patent right or utility model |